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Earnings per share | 12 Months Ended
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Sep. 30, 2016
Earnings Per Share [Abstract] |
Earnings per share | Earnings per share The weighted average number of shares outstanding used to compute earnings per shares was as follows (in thousands):
| Year ended September 30,
| 2016 |  | 2015 |  | 2014
Weighted average shares outstanding | 65,822 |  |  | 66,682 |  |  | 67,680 |
Effect of employee stock options and unvested restricted stock awards | 407 |  |  | 593 |  |  | 1,407 |
Denominator for diluted earnings per share | 66,229 |  |  | 67,275 |  |  | 69,087 |
For the years ended September 30, 2016, 2015 and 2014, 21,000, 15,000 and 286,000 unvested restricted stock units, respectively, have been excluded from the calculation of diluted earnings per share as the effect of including them would have been anti-dilutive.

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